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FILE - Sports bettors watch the screens in the race and sports book at Wynn Las Vegas, in this March 15, 2009 file photo taken in Las Vegas. Las Vegas casinos think this weekend’s NFL week three 2012 games will be the highest-scoring ever _ and that you can thank the league’s replacement officials. Oddmakers say casinos are changing their expectations as interim referees add new variables to the game, changing its pace and approaches from players and coaches. (AP Photo/Isaac Brekken)

FILE - Sports bettors watch the screens in the race and sports book at Wynn Las Vegas, in this March 15, 2009 file photo taken in Las Vegas. Las Vegas casinos think this weekend’s NFL week three 2012 games will be the highest-scoring ever _ and that you can thank the league’s replacement officials. Oddmakers say casinos are changing their expectations as interim referees add new variables to the game, changing its pace and approaches from players and coaches. (AP Photo/Isaac Brekken)